Online Accounting Service for Small Business Made Simple
Running a small business is hard enough without worrying about accounts, tax deadlines, or surprise bills. Simplex offers a reliable online accounting service for small business owners who want clarity, confidence, and expert support whenever they need it.
With Simplex, you get a dedicated accountant, unlimited calls and emails, and straightforward advice that actually makes sense – all delivered online, so support is always within reach.
Book Your Consultation and see how simple your finances can be.
Proactive Tax Support
We take care of compliance and keep your records accurate and up to date. By staying on top of your numbers and deadlines, we help you stay organised and avoid unnecessary tax issues.
Small Business Focus
Our online accounting service is built specifically for small businesses at every stage. Whether you are just starting out or growing steadily, your accounting support adapts to how your business works.
Unlimited Support
Speak to your accountant as often as you need by phone, email, or WhatsApp.
There are no extra charges for questions, support, or reassurance when something is unclear.
Accounting Support That Fits Around Your Small Business
If you’re a small business owner, you’ve probably spent too much time juggling invoices, keeping up with HMRC rules, or worrying whether you’re paying more tax than you should. Many online accounting services feel impersonal, slow, or confusing. Simplex was built to change that. Our online accounting service for small businesses combines modern tools with real human support, giving you peace of mind, better cash flow, and the confidence that your finances are handled properly.
What’s Included in Our Service
This service includes the core accounting support most small businesses need, delivered online with clear communication and ongoing help.
✅ A dedicated accountant who understands your business
✅ Bookkeeping review and ongoing support
✅ VAT returns and HMRC submissions
✅ Payroll support using BrightPay and Modulr, where required
✅ Self Assessment or Corporation Tax returns
✅ Tax compliance support and deadline reminders
✅ Secure online access to your numbers at any time
All delivered online with personal support that never feels automated.
“From the get-go, they were friendly, attentive and easy to get hold of … Their focused and concise interactions have enabled me to get my bookkeeping right first time and more importantly get on with what I am an expert in and grow my business.”
Peter, Consultant
A More Personal Online Accounting Experience
Unlike many online accounting platforms, Simplex never treats you like a number. You’ll always speak to someone who knows your business and genuinely wants to help. We keep things jargon-free, explain what’s happening, and guide you through every decision.
📞 Opening hours: 9 am–6pm
⏱️ 48-hour response guarantee for all clients
Support Wherever You Are
Simplex works completely online, so you can get support from anywhere in the UK. All communication and documents are handled digitally, with no need for in-person meetings.
You can contact your accountant by phone, email, or WhatsApp during opening hours and share records securely online.
Being fully remote means less disruption to your day and more flexibility for your business. You get consistent support, clear communication, and reliable accounting without the need to travel or take time away from work.
“Simplex have been an integral part of our new business, they have helped us navigate business set-up, HMRC & tax and accounting. Professional, knowledgeable, dynamic and local.
We couldn’t ask for more.”
Neil, Contractor
Simple Accounting
We set you up with easy, reliable tools so your finances stay organised without adding to your to-do list. Everything is customised for the way you work, and we’re always here if you need help.
Xero
Stay organised without spreadsheets.
See your income, expenses and invoices in one place, always up to date and ready when you need it.
dext
No more chasing receipts.
Snap a photo or forward an email, and your bills and receipts are stored, sorted and matched to your accounts.
brightpay
Stress-free payroll.
Payslips, pensions and submissions are taken care of, always on time and fully compliant with HMRC
Getting Started is Easy!
We’ve made it simple for you to get the help you need:
Book a Free Call
Tell us about your business and what you need.
Send Your Info
Share your financial details securely online.
We Do the Work
We’ll sort your accounts and keep everything up to date.
Stay in Control
Get updates and support, so you always know where you stand.
Book your free discovery call! It will only take a minute
Time to Switch Accountants?
You don’t need to stay stuck with support that’s slow or confusing. Switching to Simplex is smooth and handled for you.
Seamless Transfer
We contact your previous accountant and securely move everything over, CIS, VAT, payroll and more.
No Disruption
Your accounts stay up to date while we handle the switch, so nothing gets missed.
A Fresh Start
We review your numbers, identify gaps, and get you set up with a clear plan that works for you.
Ready to switch? Let’s make it happen.
Helpful Resources
Your Questions, Answered
We know you might have some questions, and we’re here to make everything as clear and straightforward as possible. If you need more information, don’t hesitate to reach out—we’re always happy to help!
Yes, Xero is fully approved by HMRC and is compliant with Making Tax Digital rules. It is widely used by UK small businesses to submit VAT returns, manage bookkeeping, and stay compliant. HMRC works closely with software providers like Xero to ensure accuracy and security. Many accountants recommend it because it simplifies reporting and provides real-time financial visibility.
AI tools like ChatGPT can help explain accounting concepts and answer general questions, but they are not a replacement for a qualified accountant. They cannot review your full financial picture, ensure HMRC compliance, or give tailored tax advice. Many accountants now use AI alongside their expertise to work more efficiently and provide faster, more reliable support.
Yes, many small business owners manage their own bookkeeping, especially in the early stages. Cloud software such as Xero or FreeAgent makes this more manageable. However, mistakes can be costly and time-consuming to fix later. Working with an accountant alongside your bookkeeping helps ensure accuracy, keeps you compliant, and frees up time to focus on growing your business.
For most UK small businesses, yes, it is worth it. An accountant does more than file returns. They help reduce tax, avoid penalties, and support better financial decisions. They also save you hours of admin and stress. Many business owners find the peace of mind and tax savings alone more than justify the monthly cost.
Bookkeeping involves recording day-to-day transactions such as sales, expenses, and bank payments. Accounting builds on this by analysing the records, preparing accounts, filing tax returns, and offering advice. In simple terms, bookkeeping keeps your records organised, while accounting helps you understand your finances and make informed business decisions.
